My elder daughter will start at secondary school (state) in September and the school has written to us to ask her to come in next month for an "interview". They've sent a lot of forms that we have to fill in and a checklist of the things that we must bring in on that day which also includes a £50 contribution to the school fund. There is no mention that this is a voluntary donation and I'm a bit shocked - we can afford to pay it but I think it is bloody cheeky to demand it. Am I being unreasonable?